Separating Tithes

The fruits, vegetables, and grains grown within the biblically designated boundaries of The Land of Israel must have a portion set aside as tithes (divinely-mandated taxes in kind) before they can be eaten.

Before separating the various tithes from Israeli produce, recite this blessing:

Blessed are You, HaShem, our God, King of the Universe, who makes us holy through His commandments, and commanded us to separate terumot and tithes.

Separate a bit more than one percent of the produce, and then recite the following four declarations in English (or whatever language you understand):

Whatever [I've set aside that] is in excess of one percent of everything here, is hereby declared to be terumah (i.e., the priestly tithe) and is [hereby declared to be] the northernmost portion [of what has been set aside].

The one percent [of everything here] that is the remaining amount set aside here, along with nine equal amounts that are the uppermost portion of the [rest of the] produce, are declared to be the first tithe (i.e., the levitical tithe).

The one percent that I have [already set aside and have just] made [part of] the first tithe, is hereby declared to be the terumah portion of the first tithe.

Nine more equal amounts that are the lowermost part of [the rest of] the produce are declared to be the second tithe --- but if this produce must have the tithe of the poor separated from it, let [these nine percent] be the tithe of the poor.

If it is likely that the location of the source of produce was within Eretz Yisraeil, but doubtful whether or not tithes were already taken, the tithes should be separated but without reciting the blessing, but the four English declarations should still be made.